CN210486540U

CN210486540U - Waste heat recovery device of rotary cement kiln

Info

Publication number: CN210486540U
Application number: CN201921620920.8U
Authority: CN
Inventors: 谢春艳
Original assignee: Guangxi Institute of Occupational
Current assignee: Guangxi Institute of Occupational
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-05-08
Anticipated expiration: 2029-09-27

Abstract

The utility model discloses a cement rotary kiln waste heat recovery device, which comprises a device main body, wherein heat absorption channels are arranged on two sides of the device main body, the heat absorption channels penetrate through one side of the device main body, supporting legs are welded at the bottom of the device main body, a heat conduction plate is fixed on the surface of the heat absorption channels, an inner water pipe is sleeved on the outer surface of the heat conduction plate, the inner water pipe, a waste heat absorption box and heat conduction fins are arranged, a kiln body is clamped by the heat conduction plate to conduct solid heat conduction on the temperature of the surface of the kiln body, then the water passing through the inner water pipe absorbs heat on the surface of the heat conduction plate, the inner water pipe flows to the outer water pipe from one end of the device main body around the other end of the device main body, the heat is collected by hot water, a round plate is arranged between the heat conduction plates around the kiln, and returning to the water outlet pipe to preheat water, thereby increasing the recovery of heat.

Description

Waste heat recovery device of rotary cement kiln

Technical Field

The utility model relates to a waste heat recovery device technical field specifically is a rotary cement kiln waste heat recovery device.

Background

The surface temperature of the rotary kiln barrel in a burning zone can reach 350 ℃ along with the loss of a large amount of heat in the cement production process, and the rotary kiln barrel can not be collected and utilized reasonably in order to cool the surface of the kiln body.

The existing waste heat recovery device of the rotary cement kiln heats and recovers water by absorbing the sensible heat on the surface of the rotary cement kiln, the heat is conducted to flow through the surface of the rotary cement kiln by liquid and absorb heat by liquid, the heat can be lost in the forms of liquid, solid and gas, the direct heat recovery of the kiln body can not lead to the perforation of the surface of the rotary kiln and the conversion of a large amount of water into steam, the surface of the rotary kiln is about 350 ℃, water is difficult to be converted into gas state including water molecules in air, energy in a gas state cannot be well absorbed, the conversion rate is not high, the prior rotary cement kiln waste heat recovery device, when the cooling water is infused, the temperature of the water cannot be completely converted into water vapor and the temperature of the water can be kept at about 90 ℃ due to the influence of the output of the water pipe, so that the volume of the stored water can bear the water with different temperatures, the water is easy to be fully accumulated, and the heat recovery is not good.

Disclosure of Invention

An object of the utility model is to provide a rotary cement kiln waste heat recovery device to provide in solving above-mentioned background art and can't improve the conversion rate and can't more effectual secondary adds hot water and carries out the problem of storing through collecting the gaseous state heat.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a cement rotary kiln waste heat recovery device, includes the device main part, the heat absorption passageway has been seted up to the both sides of device main part, just the heat absorption passageway runs through one side of device main part, the bottom welding of device main part has the supporting legs, the fixed surface of heat absorption passageway has the heat-conducting plate, the surface of heat-conducting plate has cup jointed the inlayer water pipe, the outer water pipe has been cup jointed to the surface of inlayer water pipe, the waste heat absorption case is installed at the top of device main part, just the internally mounted of waste heat absorption case has the inlet tube, the one end of outer water pipe is connected with the outlet pipe, the surface of inlet tube is connected with a plurality of heat conduction fins.

Preferably, the inlet tube is snakelike crooked setting, and the end of intaking of inlet tube extends to the top of waste heat absorption case, and the play water end of inlet tube connects the inlayer water pipe simultaneously.

Preferably, a communicating opening is formed between the inner-layer water pipe and the outer-layer water pipe.

Preferably, the waste heat absorption box is made of heat-resistant aluminum silicate heat-insulating materials.

Preferably, the heat absorption channel, the heat conduction plate, the inner-layer water pipe and the outer-layer water pipe are cylindrical and sequentially surround the fixed kiln body.

Preferably, the tail end of the water outlet pipe is connected with a water storage tower.

Compared with the prior art, the beneficial effects of the utility model are that:

1. this kind of cement rotary kiln waste heat recovery device, through being equipped with the heat-conducting plate, the inlayer water pipe, waste heat absorption case and heat conduction fin, the kiln body passes through the heat-conducting plate centre gripping, carry out the heat-conduction of solid to the temperature on kiln body surface, the water through the inlayer water pipe absorbs the heat to the surface of heat-conducting plate after that, inlayer water pipe encircles the flow direction device main part other end from the one end of device main part and will flow to outer water pipe, the heat is collected with hot water, it is the circular slab to explain here between the heat-conducting plate, encircle the kiln body setting, and the length of the kiln body, there is the clearance between the concatenation of the kiln body and the influence of external difference in temperature, the water in the little air of evaporation forms steam, upwards fly away and be wrapped up by waste heat absorption case, heat conduction fin carries out the heat conduction to the temperature in the air.

2. This kind of rotary cement kiln waste heat recovery device, through being equipped with outer water pipe, the medial surface and the heat-conducting plate direct contact of inlayer water pipe absorb a large amount of heats, the lateral surface and the outer water pipe contact of inlayer water pipe, the medial surface that outer water pipe is upwards being strikeed to the water and the steam that form the inlayer water pipe, carries out the secondary waste heat transfer to the hot water that has followed inlayer water pipe flow to outer water pipe, improves the temperature of storing water, increases conversion efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the front cross-section structure of the present application;

fig. 3 is a schematic view of the side-cut structure of the device body of the present invention.

In the figure: 1. a device main body; 2. a heat conducting plate; 3. an inner layer water pipe; 4. an outer water pipe; 5. a water inlet pipe; 6. a heat conductive fin; 7. a waste heat absorption box; 8. a water outlet pipe; 9. a water storage tower; 10. supporting legs; 11. a kiln body; 12. a heat absorption channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a cement rotary kiln waste heat recovery device, includes device main part 1, heat absorption passageway 12 has been seted up to the both sides of device main part 1, just heat absorption passageway 12 runs through one side of device main part 1, the bottom welding of device main part 1 has supporting legs 10, the fixed surface of heat absorption passageway 12 has heat-conducting plate 2, inlayer water pipe 3 has been cup jointed to the surface of heat-conducting plate 2, outer water pipe 4 has been cup jointed to the surface of inlayer water pipe 3, waste heat absorption case 7 is installed at the top of device main part 1, just the internally mounted of waste heat absorption case 7 has inlet tube 5, the one end of outer water pipe 4 is connected with outlet pipe 8, the surface of inlet tube 5 is connected with a plurality of heat conduction fins 6, kiln body 11 has been cup jointed to heat.

Preferably, inlet tube 5 sets up for snakelike bending, and the end of intaking of inlet tube 5 extends to the top of waste heat absorption case 7, and inlayer water pipe 3 is connected to the play water end of inlet tube 5 simultaneously, increases the route of rivers, and the surface of inlet tube 5 preheats rational utilization heat through heat conduction fin 6.

Preferably, a communication port is formed between the inner-layer water pipe 3 and the outer-layer water pipe 4, and the inner-layer water pipe 3 absorbs heat and conducts heat to the water in the upper-layer water pipe 4 for the second time, so that heat conversion is improved.

Preferably, the waste heat absorption box 7 is made of heat-resistant aluminum silicate heat-insulating materials, so that heat loss is reduced.

Preferably, the heat absorption channel 12, the heat conduction plate 2, the inner layer water pipe 3 and the outer layer water pipe 4 are all cylindrical, surround the fixed kiln body 11 in sequence, absorb the sensible heat on the surface of the kiln body 11 in sequence, and are reasonable in structure.

Preferably, the end of the outlet pipe 8 is connected with a water storage tower 9 for storing heat in the form of hot water.

The working principle is as follows: firstly, a kiln body 11 is sleeved with a heat absorption channel 12, then a water inlet pipe 5 is communicated with a cooling water tower for supplying water, water flows through the kiln body along a serpentine curve, the kiln body 11 is influenced by the temperature difference with the outside, a little water in the air is evaporated to form steam, the steam is upwards scattered to be wrapped by a waste heat absorption box 7, heat conduction fins 6 conduct heat to the temperature in the air and returns to a water outlet pipe 8, the temperature of the heat conduction fins 6 is absorbed for preheating, and then the steam flows into an inner layer water pipe 3, absorbs the heat conducted by the heat conducting plate 2, the inner side surface of the inner layer water pipe 3 is directly contacted with the heat conducting plate 2 to absorb a large amount of heat, the outer side surface of the inner layer water pipe 3 is contacted with the outer layer water pipe 4, the water and the steam forming the inner layer water pipe 3 impact the inner side surface of the outer layer water pipe 4 upwards, and the hot water which flows from the inner layer water pipe 3 to the outer layer water pipe 4 is subjected to secondary waste heat transfer until the outer layer water pipe 4 is guided to the water storage tower 9 through the water outlet pipe 8 for collection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a rotary cement kiln waste heat recovery device, includes device main part (1), its characterized in that: the utility model discloses a heat absorption device, including device main part (1), heat absorption channel (12) have been seted up to the both sides of device main part (1), just one side of device main part (1) is run through in heat absorption channel (12), the bottom welding of device main part (1) has supporting legs (10), the fixed surface of heat absorption channel (12) has heat-conducting plate (2), inner water pipe (3) have been cup jointed to the surface of heat-conducting plate (2), outer water pipe (4) have been cup jointed to the surface of inner water pipe (3), waste heat absorption case (7) are installed at the top of device main part (1), just the internally mounted of waste heat absorption case (7) has inlet tube (5), the one end of outer water pipe (4) is connected with outlet pipe (8), the surface of inlet tube (5) is connected with a plurality of heat conduction fin (6), kiln body (11) have been cup.

2. The rotary cement kiln waste heat recovery device as claimed in claim 1, wherein: the inlet tube (5) is arranged in a serpentine bending mode, the water inlet end of the inlet tube (5) extends to the top of the waste heat absorption box (7), and the water outlet end of the inlet tube (5) is connected with the inner water tube (3).

3. The rotary cement kiln waste heat recovery device as claimed in claim 1, wherein: a communicating opening is arranged between the inner layer water pipe (3) and the outer layer water pipe (4).

4. The rotary cement kiln waste heat recovery device as claimed in claim 1, wherein: the waste heat absorption box (7) is made of heat-resistant aluminum silicate heat-insulating materials.

5. The rotary cement kiln waste heat recovery device as claimed in claim 2, wherein: the heat absorption channel (12), the heat conduction plate (2), the inner layer water pipe (3) and the outer layer water pipe (4) are all cylindrical and sequentially surround the fixed kiln body (11).

6. The rotary cement kiln waste heat recovery device as claimed in claim 1, wherein: the tail end of the water outlet pipe (8) is connected with a water storage tower (9).